What is it about?
Review of solid rocket motor erosive burning models from the 1950s to today. Sample model predictions, including both positive and negative erosive burning. Sample laboratory experimental setups for measuring erosive burning in solid propellant rocket motors.
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Photo by Sherry Christian on Unsplash
Why is it important?
Provides context for choosing a better erosive burning model approach for the application at hand, e.g., preliminary design of a solid rocket motor, viz. the standard industry approach of using an empirical Lenoir-Robillard model with an updated port diameter influence included. As an example of alternative approaches, the so-called Universal Erosive Burning Model by Mukunda and Paul is discussed; it is unfortunately, an example of a data-based empirical model approach circa 1960s, and despite its name, is not even an improvement over the Lenoir-Robillard convective feedback model of the 1950s, which at least has some physics behind it.
Perspectives
Enjoy the ride down memory lane viz. those who are involved in SRM predictive modeling. Perhaps the paper provides some food for thought, especially those who don't model negative erosive burning in their respective models at work.
David Greatrix
Aerotrex Consultants
Read the Original
This page is a summary of: Erosive Burning Model Predictions and Laboratory Test Data: A Retrospective, August 2020, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2020-3931.
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